EP2440699B1 - Dispositif de tirage de l'article en train d'être formé, pour des machines à tricoter circulaires - Google Patents

Dispositif de tirage de l'article en train d'être formé, pour des machines à tricoter circulaires Download PDF

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Publication number
EP2440699B1
EP2440699B1 EP10714237.4A EP10714237A EP2440699B1 EP 2440699 B1 EP2440699 B1 EP 2440699B1 EP 10714237 A EP10714237 A EP 10714237A EP 2440699 B1 EP2440699 B1 EP 2440699B1
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EP
European Patent Office
Prior art keywords
rotation
motor element
fluid
takedown
cylinder
Prior art date
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Not-in-force
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EP10714237.4A
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German (de)
English (en)
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EP2440699A1 (fr
Inventor
Tiberio Lonati
Ettore Lonati
Fausto Lonati
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Santoni SpA
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Santoni SpA
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Application filed by Santoni SpA filed Critical Santoni SpA
Publication of EP2440699A1 publication Critical patent/EP2440699A1/fr
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Publication of EP2440699B1 publication Critical patent/EP2440699B1/fr
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/88—Take-up or draw-off devices for knitting products

Definitions

  • the present invention relates to a device for takedown of the article being formed, for circular knitting machines, such as known from US 2 188 453 A .
  • adapted takedown devices which can be constituted by simple pneumatic suction devices, such as for example in circular machines of small diameter, or by more complex mechanical devices composed of one or more takedown rollers, on which the article is wrapped at least partially and which can generate greater takedown forces, for medium- and large-diameter circular machines.
  • Such takedown devices are essentially required to apply to the article being formed a substantially constant takedown force. This requirement can be met by way of two different operations, termed respectively “constant-torque operation” and “constant-speed operation".
  • the more suitable operation type is selected according to the type of knitting to be produced. If there are no variations in the characteristics or structures of the knitting during the production cycle, “constant-speed operation” can be employed. If instead the production cycle provides for variations of the type or quantity of the knitting produced, such as for example in machines with electronic selection, with particular reference to those that transfer the knitting from needles to contiguous needles, the more suitable operation is constant-torque operation.
  • a transmission ratio is set between the needle cylinder of the machine that produces the article and the takedown roller with which the article engages.
  • each variation of the rotation rate of the needle cylinder is matched by a variation of the rotation rate of the takedown roller.
  • reduction units and speed variators are used to transmit the rotary motion of the needle cylinder to the takedown roller.
  • the takedown roller can also be driven by an independent electric motor that is driven with a rotation rate which is correlated to the rotation rate of the needle cylinder according to a preset ratio.
  • the rotation of the takedown roller can undergo speed variations depending on the type of knitting being produced so as to keep the torque applied to the takedown roller and thus the takedown force applied to the article being formed substantially constant.
  • Takedown devices with constant-torque operation of the known type use, for driving the takedown roller, a torque limiter or a spring reloading system or an electric motor which can deliver a constant torque as the rotation rate varies.
  • the takedown devices with spring reloading are, as a whole, the simplest devices to provide and manage.
  • Such devices generally comprise at least one takedown roller, which is arranged with its axis in a horizontal position and is supported, so that it can rotate about its own axis, by a supporting structure arranged below the needle cylinder of the circular knitting machine.
  • the takedown roller generally cooperates with other rollers so as to achieve the partial wrapping of the article on its lateral surface in order to have the adhesion to the article that is needed to actuate its takedown.
  • Such devices are provided with a motor element, which can rotate with a reciprocating motion, along an arc of rotation, about a main axis, which generally coincides with the takedown roller axis.
  • the motor element is connected to the takedown roller via a freewheel mechanism, which connects the motor element to the takedown roller only in one direction of rotation, whereas in the opposite direction of rotation it sets the motor element free with respect to the takedown roller.
  • the motor element is connected to a spring that is connected to the supporting structure and whose function is to turn the motor element in the direction of rotation in which it is connected to the takedown roller.
  • the motor element is provided with an arm which engages portions of face cams, which are fixed to the supporting structure of the machine with respect to which the needle cylinder can be activated with a rotary motion around its vertically arranged axis.
  • the needle cylinder rotates about its own axis with respect to the supporting structure.
  • the supporting structure of the takedown device rotates together with the needle cylinder and therefore the arm of the motor element engages progressively the portions of the face cams that generate the rotation of the motor element about the main axis in the direction of rotation in which the motor element rotates freely with respect to the takedown roller.
  • This rotation which has no effect on the takedown roller, produces however the loading of the spring, which, when the engagement of the motor element arm with the face cam portions ends, causes the rotation of the motor element about the main axis in the opposite direction, i.e., in the direction of rotation in which the motor element is rotationally connected to the takedown roller.
  • the torque produced by the spring is thus transmitted to the takedown roller, which therefore applies a corresponding takedown force to the article that is engaged with it.
  • the aim of the present invention is to provide a device for takedown of the article being formed, for circular knitting machines, that is simple in structure, can have a reduced weight even if it is designed to be mounted on medium- or large-diameter machines and is highly reliable in operation.
  • an object of the invention is to provide a device that makes it possible to vary, in a simple manner, the takedown force applied to the article being formed as a function of the amount of knitting actually produced and therefore allows the provision of articles that are qualitatively superior to those obtainable with takedown devices with spring reloading of the known type.
  • Another object of the invention is to provide a device whose installation is extremely easy and quick.
  • Another object of the invention is to provide a device in which it is also possible to adjust, with high precision, the extent of the takedown force applied to the article.
  • Another object of the invention is to propose a device that can be manufactured at competitive costs.
  • a device for takedown of the article being formed, for circular knitting machines comprising:
  • the device according to the invention comprises at least one takedown roller 2, which is supported, so that it can rotate about its own axis 2a, by a supporting structure 3 and can engage, by means of its lateral surface, the article 4 to be taken down.
  • the takedown roller 2 is arranged so that its axis 2a is horizontal and preferably cooperates with two other rollers 5, 6, which are supported by the supporting structure 3 so that they can rotate about their respective axes 5a, 6a, which are parallel to the axis 2a of the roller 2.
  • the rollers 5 and 6 have the task of increasing contact between the article 4 and the takedown roller 2 and of partially wrapping the article 4 around the takedown roller 2 and thus divert the article 4, after it has left the takedown roller 2, toward a collecting basket or a wrapping roller, which are not shown or are shown only partially for the sake of simplicity.
  • the rollers 2, 5, 6 are designed to be supported by the supporting structure 3 below the needle cylinder of a circular knitting machine, of a known type and not shown for the sake of simplicity, so as to engage the article 4 while it is being produced, in a manner known per se, by the needles of the knitting machine.
  • the rollers 2, 5, 6 are conveniently mutually connected in rotation about their respective axes by means of a coupling based on gears 7, 8, 9 so that the takedown roller 2, located between the rollers 5 and 6, has a direction of rotation, about its own axis 2a, which is opposite to the direction of rotation of the rollers 5, 6.
  • the device according to the invention comprises a motor element 10 that can rotate with a reciprocating motion about a main axis of rotation along an arc of rotation.
  • the main axis of rotation coincides with the axis 2a of the takedown roller 2.
  • the device according to the invention comprises actuation means 11 that operate on the motor element 10 to turn it about the main axis 2a in a first direction of rotation 41 and reloading means 12 that operate on the motor element 10 to cause its rotation about the main axis 2a in a second direction of rotation 42 that is opposite to the first direction of rotation 41.
  • Unidirectional connection means 13 are interposed between the motor element 10 and the takedown roller 2 for connecting the takedown roller 2 to the motor element 10 in its rotation in the first direction of rotation 41 and disconnecting the takedown roller 2 from the motor element 10 in its rotation in the second direction of rotation 42.
  • the reloading means 12 comprise a fluid-operated reloading cylinder 14, which is supported by the supporting structure 3 and operates with the stem 15a of its piston 15 on the motor element 10 with a reloading force FR that is oriented along a direction spaced from the main axis 2a for applying to the motor element 10 a reloading torque CR that is oriented concordantly with the second direction of rotation 42.
  • the motor element 10 comprises an annular body 16 that is arranged with its axis at the main axis 2a and two arms 17a, 17b that extend radially outward from two diametrically opposite regions of the annular body 16.
  • the ends of the arms 17a, 17b that are opposite with respect to the annular body 16, are mutually connected by curved portions 18a, 18b and by a substantially straight central portion 19 that in turn is connected, in an intermediate region of its extension, to the annular body 16 by means of a spoke 20.
  • the arms 17a, 17b and the spoke 20 constitute, in practice, three spokes of a half-wheel and, on the side opposite to the spoke 20, a further arm or spoke 21 extends on which the stem 15a of the piston 15 of the fluid-operated reloading cylinder 14, which is preferably constituted by a pneumatic cylinder, operates.
  • the unidirectional connection means 13 are preferably constituted by a freewheel mechanism that is interposed between the annular body 16 of the motor element 10 and the shaft 22 of the takedown roller 2.
  • the device according to the invention also comprises means 45 for unidirectional rotation of the takedown roller 2, which allow the takedown roller 2 to rotate freely about its own axis 2a in the direction of rotation that takes down the article 4, but prevent it from rotating in the opposite direction.
  • the unidirectional rotation means 45 are constituted by another freewheel mechanism, shown in Figure 5 , which is interposed between the takedown roller 2 and the supporting structure 3.
  • the unidirectional rotation means 45 prevent the takedown roller 2 from being able to rotate- in the second direction of rotation 42, by means of the takedown applied to the article 4, during the actuation of the fluid-operated reloading cylinder 14, as will become better apparent hereinafter.
  • the actuation means 11, in the illustrated embodiment, comprise elastic means that contrast the rotation of the motor element 10 which is actuated by the reloading means 12.
  • elastic means are preferably constituted by a helical spring 23 that is connected by means of one of its ends to the motor element 10 and by means of its opposite end to the supporting structure 3.
  • the helical spring 23 is arranged along a direction that is spaced from the main axis 2a so that the driving force FM, which is generated by the elastic reaction of the helical spring 23, produces on the motor element 10 a driving torque CM that is oriented concordantly with the first direction of rotation 41, i.e., in the direction opposite to the rotation, imparted to the motor element 10, about the axis 2a by the fluid-operated reloading cylinder 14.
  • means for adjusting the preloading of the helical spring 23 are provided.
  • Such adjustment means are constituted by a threaded rod 24, which is connected to the end of the helical spring 23 that is opposite the end connected to the motor element 10.
  • the threaded rod 24 engages a block 34, which is jointly connected to the supporting structure 3, by means of a nut 26 and a lock nut 27, by acting on which it is possible to produce the translational motion of the threaded rod 24 along its own axis in relation to the supporting structure 3, in order to shorten or lengthen the helical spring 23.
  • a graduated scale 25 which is jointly connected to the supporting structure 3 and by means of which it is possible to detect the position of the end of the threaded rod 24 that is opposite the end connected to the helical spring 23, so as to allow high precision in adjusting the preload applied to the helical spring 23.
  • the distance of the direction along which the helical spring 23 is arranged and the main axis 2a also can vary so as to vary, with equal elastic reaction or driving force FM generated by the helical spring 23, the driving torque CM applied by said helical spring 23 to the motor element 10.
  • the end of the helical spring 23 opposite the threaded rod 24 is connected to the arm 17b and along said arm 17b, in a radial direction with respect to the main axis 2a, there are a plurality of pins 28, which are arranged at different distances from the main axis 2a and to which the end of the helical spring 23 can be attached so as to allow, depending on the requirements, adjustment of the arm with which the driving force FM or elastic reaction of the helical spring 23 acts on the motor element 10, generating a driving torque CM which is oriented along the first direction of rotation 41, i.e., opposite to the reloading torque CR generated by the fluid-operated reloading cylinder 14.
  • the device according to the invention comprises means for delimiting the arc of the rotation of the motor element 10 about the main axis 2a.
  • Such means for delimiting the arc of the rotation of the motor element 10 about the main axis 2a comprise stroke limiting sensors 29a, 29b, which are adapted to switch the actuation of the fluid-operated reloading cylinder 14 at least upon the completion of the arc of rotation of the motor element in the second direction of rotation 42.
  • the stroke limiting sensors 29a, 29b are connected to an element 30 for controlling the supply of the fluid-operated reloading cylinder 14 with a pressurized fluid and on the motor element 10 there are abutments 31a, 31 b which are adapted to interact with the control element 30 when the motor element 10 reaches the ends of its arc of rotation.
  • the control element 30 is constituted by a slide valve of a known type, which is arranged along a supply line 32 of a pressurized fluid and has two operating positions: a first position, shown in Figure 9 , in which it connects the supply line 32 to the fluid-operated reloading cylinder 14 so as to generate the reloading force FR with which the stem 15a of said fluid-operated reloading cylinder 14 acts on the control element 30, and a second position, shown in Figure 10 , in which it connects the fluid-operated reloading cylinder 14 to the discharge so as to allow the stem 15a of the piston 15 to return by way of the elastic reaction or driving force FM generated by the helical spring 23, as will become better apparent hereinafter.
  • the stroke limiting sensors 29a, 29b are constituted by the opposite ends of the slide of this valve, and the abutments 31 a, 31 b arranged on the motor element 10 operate on said sensors 29a, 29b.
  • the abutments 31 a, 31 b are constituted by pins, each fitted inside a corresponding curved slot 33a, 33b provided respectively on the curved portion 18a and on the curved portion 18b of the control element 30.
  • Each one of the abutments 31a, 31b is attached to the corresponding curved portion 18a, 18b for example by bolting, and their position along the corresponding curved slot 33a, 33b can be changed so as to vary the breadth of the arc of rotation of the motor element 10 about the main axis 2a.
  • the actuation means as an alternative to the helical spring 23, can be constituted by a fluid-operated driving cylinder, which is supplied with a pressurized fluid and acts on the motor element 10 in contrast with the fluid-operated reloading cylinder 14, i.e., to cause its rotation about the main axis 2a in the first direction of rotation 41.
  • the pressure of the fluid that supplies said fluid-operated driving cylinder is preferably constant during its operation so as to keep the driving torque CM applied to the motor element 10 substantially constant.
  • Such fluid-operated driving cylinder can be arranged in the same manner as the helical spring 23, i.e., connected with its body to the supporting structure 3 and with the stem of its piston to one of the pins 28.
  • means of a known type for adjusting the supply pressure of this fluid-operated driving cylinder can be provided in order to vary the extent of the driving force FM and therefore of the driving torque CM that is applied by said fluid-operated driving cylinder to the motor element 10.
  • the means for adjusting the pressure of the fluid-operated driving cylinder can be connected to an actuation and control element of the programmable electronic type for varying the supply pressure of the fluid-operated driving cylinder according to a preset program.
  • Such actuation and control element of the programmable electronic type can be constituted by the actuation and control element that supervises the operation of the circular knitting machine.
  • the actuation and control element can vary continuously the supply pressure of the fluid-operated driving cylinder as a function of the knitting being performed on the machine, according to preset programs, so as to adjust the takedown force FT, applied to the article 4, to the knitting in progress, thus achieving a high quality in production.
  • the fluid-operated driving cylinder also is preferably constituted by a pneumatic cylinder.
  • the fluid-operated driving cylinder and the fluid-operated reloading cylinder 14 can be integrated in a single double-acting fluid-operated cylinder which, when supplied in one direction, causes the rotation of the motor element 10 about the main axis 2a in the first direction of rotation 41 and when supplied in the opposite direction causes the rotation of the motor element 10 about the axis 2a in the second direction of rotation 42.
  • the supporting structure 3 preferably hangs, for example by means of two suspension arms 35a, 35b, below the needle cylinder of the circular knitting machine to which the device according to the invention is applied.
  • the fluid-operated reloading cylinder 14 is supplied with a pressurized fluid so that the stem 15a of its piston 15 protrudes from the body of the cylinder 14 and applies to the motor element 10 a reloading force FR that produces a reloading torque CR higher than the driving torque CM applied by the helical spring 23 to said motor element 10.
  • the motor element 10 rotates about the main axis 2a in the second direction of rotation 42, which is counterclockwise in Figures 6 , 7 and 8 , and the presence of the freewheel mechanism 13 prevents said rotation from being transmitted to the takedown roller 2.
  • control element 30 is in the position shown in Figure 9 so as to connect the supply line 32 of a pressurized fluid to the fluid-operated reloading cylinder 14.
  • the fluid-operated reloading cylinder 14 is again supplied with a pressurized fluid and therefore the fluid-operated reloading cylinder 14 operates again on the motor element 10, causing its rotation about the main axis 2a in the second direction of rotation 42, i.e., counterclockwise, in Figures 6 , 7 and 8 , loading again the helical spring 23, as shown in Figure 7 .
  • a fluid-operated driving cylinder is used, as described above, the rotation in the first direction of rotation 41, i.e., clockwise, in Figures 6 , 7 and 8 , is produced by the actuation of said fluid-operated driving cylinder.
  • a substantially constant pressure for the pressurized fluid that supplies the fluid-operated driving cylinder during the action thereof it is possible to apply to the motor element 10 a substantially constant driving torque CM that leads to a substantially constant takedown force FT for the article 4.
  • the device according to the invention fully achieves the intended aim, since its structural simplicity makes it possible to contain its weight even in case it is designed to be fitted to medium- or large-diameter circular knitting machines, and is highly reliable and versatile in operation.
  • it can actuate the takedown of an article in a circular knitting machine without using the rotation of the needle cylinder, it makes it possible to adjust the tension applied to the article during its formation with higher precision and operating freedom.
  • Another advantage of the device according to the invention is that it is simple in structure and has a low total weight, which makes it possible to attach its supporting structure directly below the needle cylinder of the machine without the need for further supports for the takedown device.
  • the materials used, as well as the dimensions, may be any according to requirements and to the state of the art.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Claims (21)

  1. Dispositif destiné à tirer un article en train d'être formé sur une machine à tricoter circulaire, comprenant :
    - au moins un rouleau de tirage (2), qui est supporté, de telle sorte qu'il puisse tourner autour de son propre axe, par une structure de support (3) et qui peut venir en prise, au moyen de sa surface latérale, avec l'article (4) à tirer ;
    - un élément moteur (10) qui peut tourner dans un mouvement de va-et-vient, le long d'un arc de rotation, autour d'un axe principal (2a) ;
    - des moyens d'actionnement (11), qui agissent sur ledit élément moteur (10) de façon à ce qu'il tourne autour dudit axe principal (2a) dans une première direction de rotation (41) ;
    - des moyens de rechargement (12), qui agissent sur ledit élément moteur (10) de façon à ce qu'il tourne autour dudit axe principal (2a) dans une seconde direction de rotation (42) qui est opposée à ladite première direction de rotation (41) ;
    - des moyens de connexion unidirectionnelle (13) interposés entre ledit élément moteur (10) et ledit rouleau de tirage (2), destinés à connecter ledit rouleau de tirage (2) et ledit élément moteur (10) dans sa rotation dans ladite première direction de rotation (41), et à déconnecter ledit rouleau de tirage (2) dudit élément moteur (10) dans sa rotation dans ladite seconde direction de rotation (42) ;
    caractérisé en ce que lesdits moyens de rechargement (12) comprennent un cylindre de rechargement actionné par fluide (14), qui est supporté par ladite structure de support (3) et qui agit grâce à la tige (15a) de son piston (15) sur ledit élément moteur (10) avec une force de rechargement (FR) qui est orientée le long d'une direction espacée dudit axe principal (2a) de façon à appliquer audit élément moteur (10) un couple de rechargement (CR) qui est orienté de manière concordante avec ladite seconde direction de rotation (42).
  2. Dispositif selon la revendication 1, caractérisé en ce que lesdits moyens de connexion unidirectionnelle (13) sont constitués par un mécanisme de roue libre qui est interposé entre ledit élément moteur (10) et ledit rouleau de tirage (2).
  3. Dispositif selon les revendications 1 et 2, caractérisé en ce que l'axe dudit rouleau de tirage (2) est agencé de manière horizontale et coïncide avec ledit axe principal (2a).
  4. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend des moyens destinés à délimiter l'arc de rotation dudit élément moteur (10) autour dudit axe principal (2a).
  5. Dispositif selon la revendication précédente, caractérisé en ce que lesdits moyens destinés à délimiter l'arc de rotation comprennent des détecteurs de limitation de course (29a, 29b), qui sont adaptés de façon à commuter l'actionnement dudit cylindre de rechargement actionné par fluide (14) au moins à la fin de l'arc de rotation dudit élément moteur (10) dans ladite seconde direction de rotation (42).
  6. Dispositif selon la revendication précédente, caractérisé en ce que lesdits détecteurs de limitation de course (29a, 29b) sont connectés à un élément (30) destiné à commander l'approvisionnement en fluide pressurisé dudit cylindre de rechargement actionné par fluide (14) ; des butées (31, 31b) étant disposées sur ledit élément moteur (10) et étant adaptées de façon à interagir avec lesdits détecteurs de limitation de course (29a, 29b) lorsque ledit élément moteur (10) atteint les extrémités de son arc de rotation.
  7. Dispositif selon la revendication précédente, caractérisé en ce que la position desdites butées (31a, 31b) sur ledit élément moteur (10) peut varier de façon à faire varier la largeur de l'arc de rotation dudit élément moteur (10) autour dudit axe principal (2a).
  8. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend des moyens (45) destinés à la rotation unidirectionnelle dudit rouleau de tirage (2) et qui sont adaptés de façon à bloquer la rotation dudit rouleau de tirage (2) autour de son propre axe (2a) dans la direction opposée à la direction de tirage de l'article (4).
  9. Dispositif selon la revendication précédente, caractérisé en ce que lesdits moyens de rotation unidirectionnelle (45) sont constitués par un autre mécanisme de roue libre qui est interposé entre ledit rouleau de tirage (2) et ladite structure de support (3).
  10. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce que lesdits moyens d'actionnement (11) comprennent des moyens élastiques qui s'opposent à la rotation dudit élément moteur (10) par l'action desdits moyens de rechargement (12).
  11. Dispositif selon la revendication précédente, caractérisé en ce que lesdits moyens élastiques comprennent un ressort hélicoïdal (23), qui est connecté par l'intermédiaire de l'une de ses extrémités audit élément moteur (10), et par l'intermédiaire de son autre extrémité à ladite structure de support (3) ; ledit ressort hélicoïdal (23) étant agencé le long d'une direction qui est espacée dudit axe principal (2a) de façon à appliquer audit élément moteur (10) un couple d'entraînement (CM) qui est orienté de manière concordante avec ladite première direction de rotation (41).
  12. Dispositif selon la revendication précédente, caractérisé en ce qu'il comprend des moyens destinés à régler la charge initiale dudit ressort hélicoïdal (23).
  13. Dispositif selon la revendication 11 ou la revendication 12, caractérisé en ce que la distance entre la direction le long de laquelle est agencé ledit ressort hélicoïdal (23), et ledit axe principal (2a), peut varier de façon à faire varier, grâce à une réaction élastique égale générée par ledit ressort hélicoïdal (23), le couple d'entraînement (CM) appliqué par ledit ressort hélicoïdal (23) audit élément moteur (10).
  14. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce que lesdits moyens d'actionnement (11) comprennent un cylindre d'entraînement actionné par fluide qui agit sur ledit élément moteur (10) par opposition audit cylindre de rechargement actionné par fluide (14).
  15. Dispositif selon la revendication précédente, caractérisé en ce que ledit cylindre d'entraînement actionné par fluide est approvisionné avec un fluide sous une pression sensiblement constante.
  16. Dispositif selon la revendication précédente, caractérisé en ce qu'il comprend des moyens destinés à régler la pression du fluide d'approvisionnement dudit cylindre d'entraînement actionné par fluide.
  17. Dispositif selon la revendication précédente, caractérisé en ce que lesdits moyens destinés à régler la pression du fluide dudit cylindre d'entraînement actionné par fluide, sont connectés à un élément d'actionnement et de commande du type électronique programmable destiné à faire varier la pression du fluide d'approvisionnement dudit cylindre d'entraînement actionné par fluide selon un programme préréglé.
  18. Dispositif selon la revendication précédente 16, caractérisé en ce que lesdits moyens destinés à régler la pression du fluide dudit cylindre d'entraînement actionné par fluide, sont connectés à un élément d'actionnement et de commande du type électronique programmable, qui surveille le fonctionnement de la machine à tricoter circulaire, ledit élément d'actionnement et de commande étant adapté de façon à faire varier la pression d'approvisionnement dudit cylindre d'entraînement actionné par fluide en fonction du tricotage exécuté sur la machine.
  19. Dispositif selon une ou plusieurs des revendications précédentes 14 à 18, caractérisé en ce que ledit cylindre d'entraînement actionné par fluide et ledit cylindre de rechargement actionné par fluide (14), sont intégrés en un seul cylindre actionné par fluide à double action.
  20. Dispositif selon une ou plusieurs des revendications précédentes 14 à 19, caractérisé en ce que ledit cylindre de rechargement actionné par fluide (14) et ledit cylindre d'entraînement actionné par fluide, sont des cylindres pneumatiques.
  21. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce que ladite structure de support (3) est accrochée sous le cylindre à aiguilles de la machine à tricoter.
EP10714237.4A 2009-06-08 2010-04-09 Dispositif de tirage de l'article en train d'être formé, pour des machines à tricoter circulaires Not-in-force EP2440699B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2009A000995A IT1394554B1 (it) 2009-06-08 2009-06-08 Dispositivo per il tiraggio del manufatto in formazione per macchine circolari per maglieria.
PCT/EP2010/054731 WO2010142478A1 (fr) 2009-06-08 2010-04-09 Dispositif de tirage de l'article en train d'être formé, pour des machines à tricoter circulaires

Publications (2)

Publication Number Publication Date
EP2440699A1 EP2440699A1 (fr) 2012-04-18
EP2440699B1 true EP2440699B1 (fr) 2015-06-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10714237.4A Not-in-force EP2440699B1 (fr) 2009-06-08 2010-04-09 Dispositif de tirage de l'article en train d'être formé, pour des machines à tricoter circulaires

Country Status (7)

Country Link
US (1) US8240173B2 (fr)
EP (1) EP2440699B1 (fr)
KR (1) KR20120027009A (fr)
CN (1) CN102459735B (fr)
BR (1) BRPI1010615A2 (fr)
IT (1) IT1394554B1 (fr)
WO (1) WO2010142478A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20121090A1 (it) * 2012-06-21 2013-12-22 Santoni & C Spa Dispositivo avvolgitore per l'avvolgimento di una striscia di tessuto o di maglia o simile su un rullo, particolarmente per macchine circolari per maglieria.
CN107226378A (zh) * 2017-06-01 2017-10-03 浙江理工大学 针织圆纬机的恒张力卷布装置
CN107761241B (zh) * 2017-11-29 2023-05-26 百润(晋江)科技有限公司 一种圆机坯布牵拉装置

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
US2188459A (en) * 1937-10-18 1940-01-30 Wildt & Co Ltd Fabric winding-down or drawing-off mechanism for knitting machines
US2710530A (en) * 1952-05-16 1955-06-14 Burdett Henry Sidney Fabric winding-down or drawing-off mechanism for circular knitting machines
GB975806A (en) 1962-03-16 1964-11-18 Corah St Margaret Ltd N Equipment for circular knitting machines
GB1174898A (en) * 1966-03-26 1969-12-17 Bentley Eng Co Ltd Fabric Draw-Off from Knitting Machines
JPS61174456A (ja) * 1985-01-25 1986-08-06 株式会社　福原精機製作所 メリヤス丸編機の巻取部における駆動装置
US4879886A (en) * 1987-05-01 1989-11-14 Gunze Limited Circular knitting machine
CN2052778U (zh) * 1989-05-20 1990-02-14 黄鸿儒 圆针织机卷布装置
GB2246369A (en) * 1990-07-24 1992-01-29 Chin Yung Lin Cloth winding device for textile machine
US6082143A (en) * 1997-08-14 2000-07-04 Sara Lee Corporation Circular knitting machine

Also Published As

Publication number Publication date
EP2440699A1 (fr) 2012-04-18
ITMI20090995A1 (it) 2010-12-09
US8240173B2 (en) 2012-08-14
US20120073334A1 (en) 2012-03-29
KR20120027009A (ko) 2012-03-20
CN102459735A (zh) 2012-05-16
IT1394554B1 (it) 2012-07-05
CN102459735B (zh) 2014-01-01
BRPI1010615A2 (pt) 2016-03-15
WO2010142478A1 (fr) 2010-12-16

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